Page 11 - 8.4 JOINTS

3. P I V O T JOI NT :
3. PIVOT JOINT:

onl
S

y
h
joints
allo

uc
w
• •Such joints allow only
ota
ota
ota
r r r
another
another
tion
tion
one
one
one
tion
another
gains
gains
gains
a
a
a
rotation against one another.
t
.
t
t
.
.
I n it a c y lindrical bone r ota tes
tes
tes

r
ota
ota
r
In it a cylindrical bone rotates

.
in a ring.
in
ring
a
us
us
us
head

head
head

bend
our
our
bend
bend
our

to
to
to

allo
allo
t
w
w
allo
I
I
• •It allows us to bend our head
t
t
I
w
s
s
s
and
orw
kw
d
kw
kw
ar
ar
ar
and
orw
orw
and
f f f
and
d
d
d
bac
bac
d
bac
ar
ar
ar
and
d
forward and backward and
and
right
right
head
n
n
tur
tur n the head to our right and
the
to
the
head
to
our
and
and
tur
turn the head to our right and
our
left.
lef t.
• •Example: joint present
es
ent
E
pr
joint
xample:
between the neck and the first
and
and
betw een the nec k and the f ir s t
the
the
pine.
s

pine.
of
of
two vertebrae of the spine.
tw o v er te br ae of the s pine.
s

the
the